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CVE-2026-93868

Cotonti through 1.0.0 Predictable Password Recovery Token via Weak PRNG

CVSS 4.0 9.2 CRITICALCVSS 3.1 8.1 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

Historical advisory recorded 23 Oct 2026 15:48:27 UTC. Read the latest advisory.

cve-program · CVE-2026-93868

Published

Cotonti through 1.0.0 derives password recovery validation tokens from md5(microtime()) in users.passrecover.php, creating a predictable token space of approximately one million values per second. Unauthenticated attackers can read the server Date header, precompute candidate tokens within a narrow time window, and probe them against the passrecover authentication endpoint to reset any account password including administrators.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-93868

Published

Cotonti

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Cotonti",
                    "product": "Cotonti",
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:composer/cotonti/cotonti",
                    "versions": [
                        {
                            "version": "0",
                            "lessThanOrEqual": "1.0.0",
                            "status": "affected",
                            "versionType": "custom"
                        }
                    ],
                    "repo": "https://github.com/Cotonti/Cotonti",
                    "programFiles": [
                        "modules/users/inc/users.passrecover.php"
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON